Siemens SIMATIC S7-1200 CP 1243-8 IRC - Page 42

LEDs and connectors
2.2 LEDs
CP 1243-8 IRC
42 Operating Instructions, 02/2018, C79000-G8976-C385-03
Display of the operating and communications statuses
The LEDs indicate the operating and communications status of the module according to the
following scheme:
Table 2- 5 Display of the operating and communications statuses
DIAG
(red / green)
LINK
(red / green)
CONNECT
ETH
(green)
VPN
(green)
CONNECT
RS232
(green)
Meaning
(if more than one point listed: alternative
meaning)
Module startup (STOP → RUN) or error statuses
Power OFF
red
green
Startup - phase 1
flashing red
-
Startup - phase 2
green
- - - - Running (RUN) without serious error
red
-
- - Invalid STEP 7 project data
flashing red
- - - - Missing STEP 7 project data
flashing red
-
- Backplane bus error with configured Ether-
net connections
flashing red
-
- Backplane bus error with configured connec-
tions via the serial interface
flashing red
-
- Backplane bus error with configured connec-
tions via the Ethernet and the serial interface
Connection to Industrial Ethernet, status of the CPU
-
green
- - - Connection to Industrial Ethernet exists
CPU in RUN.
-
flashing green
- - - Connection to Industrial Ethernet exists
CPU in STOP
- - - - No connection to Industrial Ethernet
-
flashing red
- - - Duplicate IP address detected in the Ether-
net network
Connections via Ethernet